(19)
(11) EP 0 330 191 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.08.1990 Bulletin 1990/33

(43) Date of publication A2:
30.08.1989 Bulletin 1989/35

(21) Application number: 89103127.0

(22) Date of filing: 23.02.1989
(51) International Patent Classification (IPC)4C12N 15/00
(84) Designated Contracting States:
AT BE CH DE ES FR GB IT LI LU NL SE

(30) Priority: 25.02.1988 US 160416

(60) Divisional application:
96104493.0

(71) Applicant: THE GENERAL HOSPITAL CORPORATION
Boston, MA 02114 (US)

(72) Inventors:
  • Seed, Brian, Dr. Department of Molecular Biology
    Boston, MA 02114 (US)
  • Allen, Janet
    Boston, MA 02116 (US)
  • Aruffo, Alejandro
    Belmont, MA 02178 (US)
  • Camerini, David
    Cambridge, MA 02108 (US)
  • Lauffer, Leander, Dr.
    Boston, MA 02108 (US)
  • Oquendo, Carmen Patricia
    Boston, MA 02108 (US)
  • Simmons, David
    Boston, MA 02114 (US)
  • Stamenkovic, Ivan
    Brookline, MA 02146 (US)
  • Stengelin, Siegfried, Dr.
    D-6238 Hofheim am Taunus (DE)

(74) Representative: Fischer, Hans-Jürgen, Dr. et al
Hoechst AG Patent- und Lizenzabteilung Gebäude K 801
65926 Frankfurt am Main
65926 Frankfurt am Main (DE)


(56) References cited: : 
   
       


    (54) DNA encoding CD40


    (57) A simple and highly efficient method for cloning cDNAs from mammalian expression libraries based on transient expression in mammalian host cells has been discovered. Novel expression vectors allowing highly efficient construction of mammalian cDNA libraries are disclosed. The cloning method of the invention which has been used to clone genes for cell surface antigens of human lymphocytes, has general application in gene cloning. Cell surface antigens cloned according to the present invention have been purified, and the nucleotide and amino acid sequences determined. These antigens have diagnostic and therapeutic utility in immune-mediated infections in mammals, including humans.





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